php將一個數值切成N份

<?php   
    /** 
     * 將一個數值切成N份 
     * @param  int $number    切的數值 
     * @param  int $avgNumber 份數 
     * @return array 
     */  
    function numberAvg($number, $avgNumber)  
    {  
        if($number == 0) {  
            $array = array_fill(0, $avgNumber, 0);  
        } else {  
            $avg     = floor($number / $avgNumber);  
            $ceilSum = $avg * $avgNumber;  
            $array   = array();  
            for($i = 0; $i < $avgNumber; $i++) {  
                if($i < $number - $ceilSum) {  
                    array_push($array, $avg + 1);  
                } else {  
                    array_push($array, $avg);  
                }  
            }  
        }  
        return $array;  
    }  

echo '<pre>';print_r(numberAvg(13, 10));